"The Disk is write-protected" problem Run Registry Editor (regedit). Navigate to the following registry key:HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control Right click on control and create new key. Name it as StorageDevicePolicies . (Copy and paste it from here if possible) Now click on StorageDevicePolicies and in right side pan right click and select create new dword and name it as WriteProtect. Double click on it and set its value to 0. Now restart your machine and try copying some files to your card..